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Clarify upgrade options (#3559)

This commit is contained in:
Frank Budinsky 2019-03-07 15:28:33 -05:00 committed by istio-bot
parent 9e1aa817ad
commit 85acb221eb
1 changed files with 6 additions and 2 deletions
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8
content/docs/setup/kubernetes/upgrade/index.md
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@ -26,7 +26,8 @@ Sidecar injector.
#### Helm upgrade
If you installed Istio with [Helm](/docs/setup/kubernetes/install/helm/#option-2-install-with-helm-and-tiller-via-helm-install) the preferred upgrade option is to let Helm take care of the upgrade:
If you installed Istio using [Helm and Tiller](/docs/setup/kubernetes/install/helm/#option-2-install-with-helm-and-tiller-via-helm-install),
the preferred upgrade option is to let Helm take care of the upgrade:
1. To keep updated all the Istio [Custom Resource Definitions](https://kubernetes.io/docs/concepts/extend-kubernetes/api-extension/custom-resources/#customresourcedefinitions) (CRDs), you must upgrade the `istio-init` chart. If the chart doesn't exist you must install the new release.
@ -48,7 +49,10 @@ If you installed Istio with [Helm](/docs/setup/kubernetes/install/helm/#option-2
#### Kubernetes rolling update
You can also use Kubernetes’ rolling update mechanism to upgrade the control plane components. This is suitable for cases when Istio hasn't been installed using Helm.
You can also use Kubernetes’ rolling update mechanism to upgrade the control plane components.
This is suitable for cases where `kubectl apply` was used to deploy the Istio components,
including configurations generated using
[helm template](/docs/setup/kubernetes/install/helm/#option-1-install-with-helm-via-helm-template).
1. Use `kubectl apply` to upgrade all the Istio's CRDs. Wait a few seconds for the Kubernetes API server to receive the upgraded CRDs: